In this paper, the authors concern to develop and evaluate secure dynamic routes discovery between a source node and a destination in the MANET if needed and achieve high speed during route discovery, update and data maintenance, optimal bandwidth for data packet transmission and select the route which is less congestion control and less overhead is very important and challenging issue in the MANET. The inherent features of MANET such as-open medium, dynamically changing network topology, lack of centralized monitoring and management point and lack of a clear line of defense it more vulnerable to a wide range of attacks.